Window



No. 62|,50L 1 Patented Mar. 2|, |899.

P. A. PETERSEN.

wlNDow. (Application led May 24, 1898.).

(No Model.) /0 /Z.

NITED STATES vPATENT EEicE.

PETER A. PETERSEN, O F-NVEBSTER, SOUTH DAKOTA.

WINDOW.

SPECIFICATION forming part of Letters Patent N o. 621,501, dated March21, 1899.

Application filed Mayr24, 1898. Serial No. 681,564. (No model.) l

To @ZZ whom t 'may concern:

Be it known that I, PETER A. PETERSEN, a citizen of the United States,residing at Webster, in the county of Day and State of South Dakota,have invented anew and usefulDoor, Window, &c.,of which the followingisa specification.

The invention relates to improvements in windows.

The object of the present invention is to improve the construction ofwindows, more especially the means for slidingly mounting a pair ofsashes in a window-casing, and to construct the abutting faces of thesashes and the casing so that they will effectually exclude dust, air,and moisture and'at thesame time prevent the sashes from sticking.

The invention consists in the construction and novel combination andarrangement of parts7 as vhereinafter fully described, illustrated inthe accompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure l is a vertical sectional view of a windowconstructed in accordance with this invention. Fig. 2 is an enlargedhorizontal sectional view of one side thereof. Fig. 3 is a detailperspective view of a portion of one of the sashes.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

l and 2 designate upper and lower sashes provided at their side edgeswith convex faces 3 and et, which slide against corresponding concavefaces 5 and 6 of vertical strips or beads 7 and 8, secured to theopposite sides of a window-casing 9 and forming ways for the upper andlower sashes. The vertical strips or beads 7 and 8, which are arrangedin pairs at the sides 0f the window-casing and which have concave outerfaces, are interposed between the side edges of the' sashes and thewindow-casing and form the entire bearing surfaces or faces for the sideedges of the sashes, which do not come in contact with the body portionof the window-casing. By forming the entire bearing-surfaces for theside edges of the sashes by the strips or beads, as shown7 the casingproper does not become worn by the sliding movement of the sashes, 5oand when the strips or beads become worn they may be readily replaced ata small cost. The lower end of the upper sash and the top of thelowersash are constructed in the usual manner; but in order to excludeair 5 5 from the top and bottom of the casing the top 10 of the uppersash and the bottom 1l of the lower sash are provided with convex faceswhich fit snugly against correspondinglycurved concave faces l2 and 13of the top and 6o bottom of the window-casing. The windowcasingisprovided adjacent to the outer con'- caved strips or beads with plainstrips or beads 14, which engage the outer face of the upper sash andcomplete the ways for the same.

The invention has the following advantages: The concave and convexabutting faces, which are located at the top, bottom, and sides of thewindow-casing, are easily constructed and absolutely prevent air, mois-7o ture, and dust from passing between them, and they obviate thenecessity of employing weather-strips. The concaved strips or beads formcomplete bearing-faces for the side edges of the sashes and areinterposed between the 75 same and the Window-casing', and by preventingthe said sashes from coming in contact with the body portion of thewindow-casing the latter is not worn away by the sliding of the sashes,and the beads when worn may be 8o replaced at a small cost.

What is claimed is- The combination with -a pair of sliding sashesprovided at their side edges with convex faces, of a window-casingprovided at op- 8 5 posite sides with beads having concave facesinterposed between the convex side edges of the sashes and the body ofthe casing and forming complete'ways for the former, sub-` Stantially asand for the purpose described. 9o

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

PETER A. PETERSEN.

